Abstract:
:Five new C21 steroidal glycosides, namely, komarosides D (1), E (2), F (3), G (4), and H (5), along with two known C21 steroidal glycosides cynatratoside E (6) and hancoside A (7), were isolated from the ethanol extract of the roots of Cynanchum komarovii Al. Iljinski (Asclepiadaceae). Their structures were determined by physiochemical and spectroscopic analysis. Among these glycosides, five had an aberrant 13,14:14,15-disecopregnane-type skeleton, and the other two had normal four-ring C21 steroid skeletons. The existence of more than one type of C21 steroid skeleton in one species is rare in the plants of the family Asclepiadaceae, and this has chemotaxonomic significance for this species.
journal_name
Steroidsjournal_title
Steroidsauthors
Liqin W,Yuemao S,Xing X,Yuqing W,Jun Zdoi
10.1016/j.steroids.2004.03.001subject
Has Abstractpub_date
2004-05-01 00:00:00pages
319-24issue
5eissn
0039-128Xissn
1878-5867pii
S0039128X04000479journal_volume
69pub_type
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